topic LPC54616 CANFD USE BRS ERROR in LPC Microcontrollers

LPC54616 CANFD USE BRS ERROR

Cherrin — Fri, 25 Oct 2024 03:19:26 GMT

When using the LPC54616 chip, if you want to receive BRS during CANFD, you only need to configure CANFD and BRS bit during initialization, right? The following figure is attached (Message ram and interrupt have been configured successfully, standard frames and FD frames without brs can be accepted normally)

Re: LPC54616 CANFD USE BRS ERROR

xiangjun_rong — Tue, 29 Oct 2024 02:19:34 GMT

Hi,

As the following Fig, when you use FD(Flexible Data rate), the classical data size is 8 Bytes, but using FD feature can extend the data size in one CAN frame.

You have to configure the FDF, BRS, DLC bits for both the transmitter and receiver frames. Because the control/ID bits and data bits transfer in different rate, so you have to define two CAN bit rate.

Pls refer to section 35.14.1.3 CAN FD operation in UM10912.pdf.

Hope it can help you

Xiangjun Rong

Re: LPC54616 CANFD USE BRS ERROR

Cherrin — Mon, 04 Nov 2024 07:53:23 GMT

I have been solved this problem，thanks for your help